CAJ | 학술논문

隧道开挖过程中，混凝土支护结构的内力分布表现出特有的动态变化特征，对施工环境下隧道支护结构的内力分布特征进行研究并对其薄弱部位进行预判是保障隧道施工安全的重要手段之一。文章将隧道弧段和边墙段初期支护分别视为弹性地基曲梁和直梁，基于初参数法和围岩压力量测，从理论上推导了马蹄形断面隧道初期支护内力计算的反演表达式；结合某隧道围岩压力的实测数据，反演了初期支护的内力分布。初期支护内力实测数据和反演分析结果对比分析表明，所提出的马蹄形隧道初期支护内力的理论反分析方法切实可行，可为隧道初期支护设计和施工工艺的优化提供理论依据。
수도개알과정중，혼응토지호결구적내력분포표현출특유적동태변화특정，대시공배경하수도지호결구적내력분포특정진행연구병대기박약부위진행예판시보장수도시공안전적중요수단지일。문장장수도호단화변장단초기지호분별시위탄성지기곡량화직량，기우초삼수법화위암압역량측，종이론상추도료마제형단면수도초기지호내력계산적반연표체식；결합모수도위암압력적실측수거，반연료초기지호적내력분포。초기지호내력실측수거화반연분석결과대비분석표명，소제출적마제형수도초기지호내력적이론반분석방법절실가행，가위수도초기지호설계화시공공예적우화제공이론의거。
Internal force distribution of concrete support has dyn amic variation characteristics during tunnel construction. Researching the distribution characteristics and pre-detecting weak parts is one of the most impor-tant means to guarantee construction security. This paper considers the primary supports at the arc and the side-wall sections as the curved beam and the straight beam of the elastic foundation respectively, and theoretically deduces an inversion formula for the internal force of the primary support in a horseshoe tunnel based on the ini-tial parameter method and measured pressure of the surrounding rock. The comparison between the measured and analyzed results shows that the above inverse analysis is practicable and can provide a theoretical basis for pri-mary support design and construction technology optimization.